Tire chain anchor device



y 1, 1940. s. GOLDENBERG 2,201,397

TIRE CHAIN ANCHOR DEVICE Filed June 22, 1939 INVENTOR. SEYMOURGOLDENBERG BY 5 a ATTORNEY.

Patented May 21, 1940 2,201,397

UNITED STATES PATENT OFFICE l 331 tenor Serif: Zoldenberg, Grantwood, N.J. a ucaaorggiia (1::91,5Sze-ri;3l3l:o.280,543

My present invention relates generally to tire nection with the drawingin which I have indichain anchoring devices, and more specifically tocated diagrammatically an embodiment whereby an anchor deviceconstructed to be retained in my invention may be carried into eflect.position between a tire shoe bead and the wheel In the drawing:

. rim flange by air pressure. j Fig.1 shows a side view of an automobileMany devices exist at the present time for wheel and tire provided withthe present invenpreventing skidding of an automobile tire on tion,slippery surfaces. Anti-skid tire chains, whether Fig. 2 is a sectionof. the wheel of Fig. 1 taken fabricated of metal or rubber, have thefollowing along line 2-2,

1 disadvantages. Rupture of one chain of an as- Fi 3 is a sectional viewtaken along line 3-3 m sembly of chains on a wheel requires replacementof Fig- 2. of the entire assembly, and the replacement is f Fig. 4 .is aview in perspective showing one of not only expensive but difllcult. Inthe case 01' the anchor devices. wheels ofthe solid type special typesof anti- Referring now to the accompanying drawing,

1; skid chains are required. Should the weather wherein like referencecharacters in the different 16 conditions be such as to make itdesirable to refi ures d si nat s lar nstru t n elements. move thechains, theentire assembly on each there is shown in Fig. 1 the wheel ofan autowheel must be removed. The autoist regards the mebileh W lcomprises the i n h coming of winter weather with annoyance, so Wheel lfmay be of the disc type 2- f course.

go far as auto driving is concerned, since the tire y othe type o ee m ybe p oyed; as. 20 chain problem is a vexatious one. for mple. po 1 W eyp Th Wheel is t may he t t t t 1t 1 one of t main provided with arim 3between whose flanges l4 objects of my present invention to provide 119-are located the tire shoe beads 5-4. As is well vices for securelyretaining a tire chain in posiknown to those skilled in the art, theinner tube ti r u d th t h and yet permitting (not shown in Fig. 2) wheninflated maintains 25 removal of a chain without disturbance of the theShoe fixed Position n t W l by retaining devi virtue of the beads beinglocked against the rim Another important'object of my inventionis toflanges here is a tremendous p essure provide an anti-skid device fortires, the device exerted laterally against h beads and fla consistingof an element adapted to overcome When the wheel 18 0f the disc Wire ypit 5 skidding tendency of the tire, and a pair or is not possible toemploy anti-skid chains of the anchor members each constructed andarranged Simple yp Shown n li y a W asto permit removal of the anti-skidelement from mbly of chains is used in such a case, and such engagementtherewith, and the anchor members b assembly is not only expensive n tand being r t i in iti between th th shoe replacement but is difficultto install over the bead and the wheel rim flange by'the air pressure tre p phery of t e e. At t e prese t t me within th inn r tub the discand wire type of wheel is becoming Another object of this invention isto provide un versal in use. H nce. it has n a problem a tire chainanchor device consisting of a subto provide anti-skid devices for suchwheels with- 40 stantially T-shaped member, and the vertical out theaforementioned disadvantages. Even in 40 section of the latter havingthe free end thereof wheels of the sp poke ty it 15 0f advanbentconvexly and being provided with an aperta e to use the s mple. efilc ta d n pe sive hire to receive a terminal of a tire chain. type ofanti-skid chain device.

Still other objects of my invention are to im- Assuming, now, that thesimple anti-skid chain 5 prove generally the simplicity and emciency of6 (shown in Figs. 1 and 2) is desired to be strapped retaining devicesfor anti-skid members, and around the face of the shoe, the chain isprovided more specifically to provide anti-skid tire chain with terminalhooks 'l, 8. My invention proanehor devices which are easily installedand ecovides an extremely simple anchor element capable nomicallymanufactured. of receiving each terminal hook. In Fig. 4, the- The novelfeatures which I believe to be charanchor element is shown as comprisinga T- 50 acteristic of my invention are set forth in parshaped metalplate having a horizontal section ticularity in the appended claims; theinvention 9 and a vertical section III which extends from itself,however, as to both its construction and the middle of the section 9.The section It is method of use will best be understood by refbent outof alignment with the plane of section 5 erence to the followingdescription taken in con- I so as to have a convex shape. The free endof the bent section III is provided with an aperture l I adapted toreceive the terminal hook of a chain.

The lower edge of section 9 is somewhat concave so as to conform to thecurvature of the rim section 9. Further, the extended wings of section 9may have a length equal to the width of section Ill. The anchor devicemay be stamped from cold, rolled steel, and the curvature of section Iiiis such as to conform to the curvature of the convex flanges 4-4 of thewheel rim.

In order to position each pair of anchor devices, it is necessary todeflate the tire until the horizontal section 9 of an anchor device canbe readily wedged between a flange 4 and a bead 5. The tire can bedeflated while the wheel is on the axle and the car is jacked up, or theentire wheel can be removed from the jacked-up axle. Assuming that thedeflation of a tire is complete, the anchor device is positioned bygrasping the free end of section l and pushing the edge I2 into thespace between bead and the outwardly curved flange 4. Continued pressureflnally will force the section [0, in horizontal position, into theapproximate position shown in Fig. 2. In such position the lower edge l2may be in contact with the periphery of rim 3, or it may be very-closethereto. The curvature of edge l2, since it conforms to that ofthe'perlphery of rim 3, permits section 9 to sit snugly between the bead5 and lower portion of flange 4. The convex curvature of section I 0conforms substantially to the curvature of flange 4, but the section IDhas a length such that a substantial portion of the free end thereofprojects beyond the edge of flange 4. Hence, the aperturell of eachanchor device can readily be grasped by the terminal hooks of a tirechain, as shown in Fig. 2.

When one, or more, pair of anchor devices have been positioned inopposed relation, as shown in Fig. 2, the tire is inflated to normaloperating air pressure. Such normal air pressure is about 30 lbs. persquare inch. This air pressure exerts two forces upon each anchor devicepositively to lock the latter in chain-retaining position. One

' of these forces is a lateral one; the radial pressure upon the head 5flrmly sandwiches section 9 between the lower portion of flange 4 andbead 5. The second force is a vertical, downwardly-directed force uponthe upper edges l4 and I4 of section 9. The effect of this second forceis shown in detail in Fig. 3. Here, the portion of shoe 5 immediatelyadjacent bead 5 is shown as having its exterior surfaces above edges l4and I4 in overlapping relation thereto. Due to the rigidity of sectionIII, and the elastic nature of the shoe, the section III actuallydepresses the surface of the shoe in contact therewith and aids inproducing a pair of compression areas on either edge I4 and I4. In Fig.2, there is shown pictorially the manner in which the shoe surfacesadjacent bead 5 tendto press down on edges l4 and ll of section 8.

In Fig. 1 there are shown four pairs of anchor devices. in; operativeposition, one face of the wheeiheing shown. It will now be appreciatedthatthe -armhor devices are readily left in operative position at alltimes. If the use of anti-skid devices is to be dispensed with, it ismerely necaaoaaov essary to remove hooks land I. The anchor devicesremain in position without harmful effect on the rim or shoe. As soon asthe road conditions, for any reason whatever, warrant use of a device toimprove traction, such device need only be fitted to a tire by attachingthe terminals thereof to the free ends of each pair of opposed anchordevices. If an anti-skid chain snaps the portions of the snapped chainare easily removed,

and a new chain secured to the anchor devices.

limited to the specific proportions and configuretions stated inconnection with the anchor device and rim flange. The rim is merelyillustrative,

and those skilled in the art are fully aware of the manner ofconstructing auto wheels. It is to be clearly understood as well thatFig. 2 is purely illustrative insofar as the relations between theanchor device, rim and shoe are concerned. What is essential is that theanchor device comprises a lateralelement capable of being positivelylocked between the shoe bead and rim flange by solely air pressure, andthat such lateral element have an element extending therefrom beyond therim flange edge and constructed to retain the terminal of an anti-skiddevice.

What I claim is:

l. A tire chain anchor device comprising a horizontal flat metallicplate element, a flat metallic plate element extending vertically fromthe middle of said horizontal plate element, said horizontal elementextending for a substantial distance beyond said middle point on eitherside of said vertical element, the free end of said vertical elementbeing provided with an aperture adapter. to receive a terminal of saidchain, said horizontal element having a lower edge which has a ccncaveshape so as to conform to the v periphery of a tire wheel rim.

2. Ananti-skid tire chain anchor device comprising a metallic horizontalflat plate adapted to be positioned between the tire wheel rim flangeand the tire bead, a metallic flat plate extending vertically from themiddle of said horizontal plate, said horizontal element extending for asubstantial distance beyond said middle point on either side of saidvertical element, said vertical element being bent convexly and havingan aperture provided adjacent the free end thereof to receive a terminalof said tire chain.

3. An anchor device for an anti-skid device of an auto tire of the typewherein the tire shoe beads are located between the wheel rim flanges;said device comprising a, lateral member having a member extending fromthe middle thereof, said lateral member being adapted to be disposedbetween the shoe bead and rim flange whereby solely air pressurepositively locks said lateral member in said position, said lateralmember extending for a substantial distance beyond said' middle point oneither side of said extending member whereby said air pressure causessaid 4. In an anti-skid chain device for an auto tire of the typewherein the tire shoe beads are located between the wheel rim flangesand retained in position solely by air pressure; the improvement in thechain retaining means which comprises a flat, horizontal plate having aconcave lower edge conforming to the periphery of said rim, a flat plateextending vertically from substantially the middle point of saidhorizontal 10 plate and being bent convexly to receive aterminal of saidchain, said horizontal plate extending for substantial distances beyondsaid middle point on either side of said vertical plate to providelocking wings, said horizontal plate being adapted to be positivelylocked between the shoe bead and rim flange by a lateral force-due tosaid air pressure and a downward force due' to said pressure against the.upper edges of said wings.

SEYMOUR GOIDENBERG.

